Change-speed gearing.



H. T. THOMAS.

CHANGE SPEED GEARING. APPLICATION FILED JUNE 11, 1914.

Patented Mar. 9, 1915.

4 SHEETS-SHEET 1.

/u- HTTOWNEY n. T. THOMAS.

CHANGE SPEED SEALING APPLICATION FILED JUN-E11 1914.

Patented Mar. 9. 1915 A SHEETS-"SHEET Z IASLQQL Wm ESSE I N -WY MQ H. T. THOMAS. CHANGE SPEED GEARING. APPLICATION FILED JUNE 11, 1914.

Patented M21119, 1915.

4 SHEETS*SHEET 3 H. T. THOMAS.

CHANGE SPEED GEARING.

APPLICATION FILED JUNE 11. 1914.

Patented Mar. 9, 1915.

4 SHBETSSHEET 4.

INVENTO]? HTTOENEY heads R and R adapted to fit and reciprocate in their respective apertures and with smaller stems 1', r fitting and adapted to reciprocate in holes in plugs s, s in the outer 5 ends of the apertures in which said pins reciprocate.

S and S are coiled pressure springs having their ends bearing respectively against the plugs s, s and against the enlarged heads It and R of said pin's. When the rods E and E are at their central position as shown for instance in Figs. 1 and 3, the rods R7 R 1 and'pins T and T are axially in line with each other respectively as are also their respective apertures.

V, V are extensions from the inner ends of the pins R1, 11 1- having rounded inner ends contacting at their central position the outer ends of the pins T, T and adapted to extend into the apertures U, U respectively, to lock the rods E and E in their central positions.

'v, '0 are shoulders adapted to strike against the outer surfaces of the rods E, E

26 respectively to limit the inward movement of the pins R1- R 1.

6, e are level raised surfaces at the outer sides of the rods E, E u on which the inner ends of the pins R1, 7- bear and slide 80 when said rods are moved from their central positions. a

W, WV and W W are surfaces formed on the rods E, E at the ends of the raised surfaces e, e These surfaces are so formed as 85 to fit the inner ends of the pins Br and R r when a rod E or E is reciprocated to the limit of its travel. The springs S and S press said pins against said surfaces so that by the resistance to movement of said rods 40 thus occasioned the proper adjusted and locking position of said rods will be indicated to the operator (Fig. 4).

The operation of the above described apparatus is as followszWhen the rods E, E

- are at their central position and the lever GJ I is vertical, the rods E and E are both locked in their central positions as shown in Figs. 1 and 3 by the pins Br and R 7 extending into the apertures U, U. When said lever is turned laterally the lower end K of said lever is moved into one of the slots Q, Q as for example into Q (Fig. 4). The pin T is pressed inward thereby forcing the pin R 14 out of engagement with the rod E so that by moving theleve r G II- the rods E may be reciprocatedlongitudinally, the inner end of the pin R 1 sliding upon the surface 6 of said rod until it engages a surface W at one end of the travel of said rod, in

which position the correct adjusted and engaging position is indicated by the engagement of said pin with said surface as above described. If the rod E is again returned to its central position the end K of said lever may be moved into the other notch Q, and

the other rod reciproeated in the same Way as just described with reference to the rod E What I claim is 1. In a change-speed gearing, the combination of the rods E and E adapted to re ciprocate in parallel adjacent paths, said rods having adjacent faces provided with slots Q, Q adapted to register, a lever movable in a plane parallel to the motion of said rods and in a plane at right angles to the same, adapted to engage in one or the other of said slots, said rodshaving apertures U,

U therein extending transversely of the same, pins T and T adapted to reciprocate in said apertures, stationary bearings, and so pins R1, R 1" adapted to reciprocate in stationary bearings and engage in said apertures, a pin T or 'I respectively being adapt ed to be actuated by said lever when moved toward the side of said pin to displace the pin R7" or Rr respectively from its aperture whlle permitting the other of said last mentioned pins to engage in the other of said apertures.

2. In a change-s eed 'earin the combination of the rods and E a aptcd to reciprocate in parallel adjacent paths, said rods having adjacent faces provided with slots Q, Q} adapted to register, a lever movable in a plane parallel to the motion of said rods and in a plane at right angles to the same, adapted to engage in one or the other of said slots, said rods having apertures U,

U therein extending transversely of the same, pins T and T adapted to reciprocate in said apiertures, stationary bearings, and pins Rr, r adapted to reciprocate in stationary bearings and engage in said apertures, a pin T or T respectively being adapted to be actuated by said lever when moved toward the side of said pin to displaeethe pin R1 or R 'r respectively from its aperture while permitting the other of said last mentioned pins to engage in the other of said apertures, said rods being provided with surfaces e, e for the pins R7, R 1 to travel on, said rods having the surfaces W W at the ends of the surfaces 6, e adapted to be engaged by the pins R1 R 7".

3. In a change-speed gearin the eombination of the rods E and E a aptcd to reciprocate in parallel adjacent paths, said rods having adjacent faces provided with slots Q, Q adapted to register, a lever movable in a plane parallel to the motion of said rods and in a plane at right angles to the same, adapted to engage in one or the other of said slots, said rods having apertures U,

U therein extending transversely of the same. stationary bearings, and ins T and T adapted to reciprocate in sai apertures pins Ila-R 7 adapted to reciprocate in stlvtionary bearings and engage in saidaper-- tures, a pin T or T respectivelybeing adapt ed to be actuated by said leve'r when moved toward the side of said pin to displace the pin R1" or 11 1" respectively from its aperture while permitting the other of said last mentioned pins to engage in the other of said apertures, said rods being provided with surfaces W and W adapted to be engaged by the pins Er, R r for the purpose described. v

4. In a change-speed gearing, the lever 10 GJI having a ball G at its center, a station- In testimony whereof, I sign ti1is specifi 15 cation in the presence 0f two wltnesses. I v HORACE T. THOIIIAS. I VWitnesses:

A. L. HORN, HOMER L. Hem 

